Dell OptiPlex 3020 Owner's Manual page 4

Removing the Processor
Installing the Processor
Removing the Intrusion Switch
Installing the Intrusion Switch
System Board Components
Removing the System Board
Installing the System Board
3 System Setup........................................................................................................ 35
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Boot Sequence
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Navigation Keys
System Setup Options
Updating the BIOS
Clearing Forgotten Password
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Clearing CMOS
System and Setup Password
Assigning a System Password and Setup Password
Deleting or Changing an Existing System and/or Setup Password
Disabling a System Password
4 Diagnostics........................................................................................................... 49
Enhanced Pre-Boot System Assessment (ePSA) Diagnostics
5 Troubleshooting Your Computer..................................................................... 51
Power LED Diagnostics
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Beep Code
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Error Messages
6 Technical Specifications.....................................................................................57
7 Contacting Dell.................................................................................................... 63
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